Stateline Mobile Home Park, WI
Exceeded the action level in the past
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2024-2024). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Stateline Mobile Home Park at a glance
Stateline Mobile Home Park serves about 37 people through 23 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Grant County, Wisconsin. EPA system ID: WI1220100. Ask the utility on your bill for your address in their service line inventory.
Stateline Mobile Home Park's lead record
Against the period ending 2024 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Stateline Mobile Home Park is 18.3 ppb across 4 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2022 | 18.3 ppb over 15 |
| 2018 | 1.8 ppb |
Against other Wisconsin systems
Of the 947 Wisconsin systems with a lead result, the median latest reading is 1.33 ppb; 6 are over 15 ppb right now and 71 have gone over at some point. Stateline Mobile Home Park's reported as 0 (not detected) sits at the 1st percentile in Wisconsin and the 2nd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
27 other systems share Grant County; 19 of them have a higher latest lead result than Stateline Mobile Home Park. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Platteville Waterworks | 12,268 | 10.3 ppb |
| Lancaster Waterworks | 3,907 | 1.8 ppb |
| Boscobel Waterworks | 3,237 | 1.1 ppb |
| Fennimore Waterworks | 2,507 | 1.61 ppb |
| Cuba City Waterworks | 2,141 | 0 (not detected) |
| Muscoda Waterworks | 1,453 | 2.64 ppb |
| Hazel Green Waterworks | 1,193 | 2.83 ppb |
| Dickeyville Waterworks | 1,069 | 0 (not detected) |
| Cassville Waterworks | 777 | 3.24 ppb |
| Montfort Waterworks | 718 | 1.1 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Hazel Green, WI may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Stateline Mobile Home Park whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. What a 90th-percentile result does and does not tell you: how to read a lead result. More in what a past exceedance means today.